<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>skew</title>
    <style>
        .skew {
            width: 50px;
            height: 50px;
            background-color: aqua
        }
        
        .skew:hover {
            transform: skew(30deg, 20deg)
        }
    </style>
</head>

<body>
    <div class="skew"></div>
</body>

</html>